package lab01;

/**
 * Created by leovo on 2017/10/7.
 */
public class 第7题 {
    public static void main(String[] args) {
            int score=0;
            if (score>=85) System.out.println("A");
            else if(score>=70) System.out.println("B");
            else if(score>=60) System.out.println("C");

            else System.out.println( "D");

    }
}
